Brake-block and holder.



E. JONES. BRAKE BLOCK AND HOLDER.

APPLICATION FILED 0GT.'17,1910.

,Patented June 13,1911.

Hal;

WI TNESSESI EDWIN JONES, OF LLANERGH-Y-MOR, HOLYWELL, ENGLAND, ASSIGNOROF ONE-HALF TO JOHN ARTHUR STUART, OF PRESIATYN, NORTH WALES, ENGLAND.

BRAKE-BLOCK AND HOLDER.

To all whom it may concern:

Be it known that I, Ebwnv JONES, a subject of the King of England,residing at Llanerch-y-mor, Holywell, North Vales, England, haveinvented certain new and useful Improvements in Brake-Blocks andHolders, of which the following is a specification.

This invention relates to brake blocks or shoes and holders for railwayand tramway vehicles.

According to this invention, the back of a brake block or shoe isprovided with a longitudinal projection or lug, the upper and lower endsof which are similarly inclined or undercut; and the holder for theblock is provided with a longitudinal slot, the lower end of which isinclined, to receive the lower inclined or undercut end of theprojection or lug on the back of the block. At the upper end of saidlongitudinal slot in the holder, a transverse slot is provided throughit, and, when the block and holder are assembled, a key or cotter ispassed through said transverse slot in the holder, and, lying on theinclined or undercut end of the projection or lug of the block, preventsdisplacement of the block from the holder. If necessary, a pin is passedthrough the end of said key or cotter to prevent it from backing-off.The block may be placed in position within the holder, from either side,or from the top. Blocks as described are reversible, and are alsointerchangeable with their holders.

A drawing illustrating this invention is annexed hereto, in which Figure1 is a side elevation, partly in section, of a block and holderassembled. Fig. 2 is a back view. Fig. 3 is a view of the front of theholder. Fig. 4 is a back view of the block. Figs. 5 and 6 are,respectively, side and back elevations of a block with modified form ofholder. Fig. 7 illustrates a portion of a block and holder with the keyor cotter removed.

The back of the block or shoe (1 is provided with a longitudinal lug Z),the ends of which are inclined or undercut at c, and the block holder atis provided with a longitudinal slot cl, the lower end 6 of which isinclined to receive the lower inclined or undercut end 0 of lug b. Atthe upper end of said longitudinal slot d, a transverse slot f isprovided through the holder. WVhen Specification of Letters Patent.

Application filed October 17, 1910.

Patented June 13, 1911.

Serial No. 587,637.

block a is fitted to the holder, the uppermost end of the lug orprojection I) preferably projects beyond the lower face 9 of thetransverse slot f, as shown at 72, Fig. 7 to permit of the necessarydraw, and to prevent rattling. 2' represents a key or cotter passedthrough said transverse slot f in the holder, and lying upon theinclined or underout upper end of lug Z), thus preventing displacementof the block from the holder. Preferably, said end of lug b is parallelwith the top of transverse slot f as shown in the drawing, in order thata key or cotter with parallel upper and lower faces may be used. Keys orcottcrs of other suitable cross section may, however, be employed. is alocking pin for said key or cotter i.

The sides of the block holder a are recessed at is to receive the head2' of the key or cotter i.

In some cases, as shown in Figs. 5 and 6, there may be provided on theholder a guide piece Z, which, by fitting over a wagon wheel, maintainsthe brake, as a whole, in position.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is 1. In combination, a brake block the backwhereof is provided with a longitudinal projection having similarlyinclined ends; a holder provided with a longitudinal slot the lower endof which is inclined-and a transverse slot; and a key adapted, whenpassed through said transverse slot, to prevent displacement of saidblock from said holder.

2. In combination, a brake block-holder provided with a longitudinalslot-the lower end of which is inclinedand a transverse slot; a brakeblock the back whereof is provided with a longitudinal projection havingsimilarly inclined ends, the upper end of said projection, when theholder and block are assembled together, being adapted to project beyondthe lower face of said transverse slot; and a key adapted, when passedthrough said transverse slot, to prevent displacement of said block fromsaid holder.

3. In combination, a brake block the back whereof is provided with alongitudinal proj ection having similarly inclined ends; a holderprovided with a longitudinal slotthe lower end of which is inclined-, atransverse slot, and a side recess; and a key adapted, when passedthrough said transverse slot,

to prevent displacement of said block from said holder.

l. In combination, a brake block-holder provided with a longitudinalslot-the lower end of which is inclined, a transverse slot, and a siderecess; a brake block the back whereof is provided with a longitudinalprojection having similarly inclined ends, the upper end of saidprojection, when said holder and block are assembled together, beingadapted to project beyond the lower face of said transverse slot; and akey adapted, when passed through said transverse slot, to preventdisplacement of said block from said holder.

In testimony whereof I aiiix my signature in the presence of twowitnesses.

EDWIN JONES.

Witnesses JoHN H. WALKER, EMILY BURn ETT.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

